The opposition is starting to notice, too.
Following three days of joint practices with the New England Patriots, Ertz's name came up a lot.
"He's a good player. He's a great player," Patriots defensive end/outside linebackerChandler Jones told CSNPhilly.com. "He's very athletic. He's faster than I thought. I feel like he's more of a skill player than anything. He runs his routes very well. I've had the opportunity to cover him for these two days of practice, and he's been a handful."
Patriots Pro Bowl safety Devin McCourty echoed similar thoughts.
"He's a good tight end, an athletic guy, stretches the field," McCourty told CSNPhilly.com. "Really, I think, understands how to get open against good defenses. That's always good work when you can go against good tight ends. They have a bunch of them. At the safety position we got some pretty good work going against them the past two days."
Ertz, a second-round pick in 2013, played in all 16 regular-season games and the playoff loss to the New Orleans Saints. He wound up with 36 receptions for 469 yards and four touchdowns.
When players have success, praise usually follows.
"I pride myself on being able to create mismatches," Ertz told CSNPhilly.com. "That's what I've done my whole life. My opinion is I can get open against anybody. I think to be successful in this league you have to have that confidence … I have to have that mentality that I can get open. At the end of last year I started to build my confidence back in myself, where like it was in college that I can beat anybody."